Wassette: A Secure Runtime for WebAssembly Components and MCP

Wassette is a security-oriented runtime that runs WebAssembly Components via the Model Context Protocol (MCP). This demo shows how GitHub Copilot (in VS Code) and the Copilot CLI work with Wassette to run MCP tools safely — applying sandbox isolation and fine-grained permissions for secure, dynamic tool execution.

Learn more:

• Wassette: https://github.com/microsoft/wassette
• GitHub Copilot CLI: https://github.com/github/copilot-cli
• Blog post “Introducing Wassette”: https://opensource.microsoft.com/blog/2025/08/06/introducing-wassette-webassembly-based-tools-for-ai-agents